Abstract

It has been observed that Lanthanide Acetylacetonates (LnAc 3) annul the magnetic field perturbation on the luminescence of cyanophenanthrene—trans-anethole (CNP-AN) exciplex. The ability of various trivalent lanthanide ions to quench the magnetic field effect was found to parallel the square root of the de Gennes factor G=(g−1) 2 J(J+1) of the ions. We offer an explanation of the phenomenon on the basis of Heisenberg exchange interaction.

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